;/**************************************************************************/
;/*                                                                        */
;/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
;/*                                                                        */
;/*       This software is licensed under the Microsoft Software License   */
;/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
;/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
;/*       and in the root directory of this software.                      */
;/*                                                                        */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/**                                                                       */
;/** ThreadX Component                                                     */
;/**                                                                       */
;/**   Module                                                              */
;/**                                                                       */
;/**************************************************************************/
;/**************************************************************************/
;
;
    IMPORT      __use_two_region_memory
    IMPORT      __scatterload
    IMPORT      txm_heap

    AREA ||.text||, CODE, READONLY
;/**************************************************************************/
;/*                                                                        */
;/*  FUNCTION                                               RELEASE        */
;/*                                                                        */
;/*    _txm_module_initialize                          Cortex-M3/MPU/AC5   */
;/*                                                           6.1          */
;/*  AUTHOR                                                                */
;/*                                                                        */
;/*    Scott Larson, Microsoft Corporation                                 */
;/*                                                                        */
;/*  DESCRIPTION                                                           */
;/*                                                                        */
;/*    This function initializes the module c runtime.                     */
;/*                                                                        */
;/*  INPUT                                                                 */
;/*                                                                        */
;/*    None                                                                */
;/*                                                                        */
;/*  OUTPUT                                                                */
;/*                                                                        */
;/*    None                                                                */
;/*                                                                        */
;/*  CALLS                                                                 */
;/*                                                                        */
;/*    __scatterload                         Initialize C runtime          */
;/*                                                                        */
;/*  CALLED BY                                                             */
;/*                                                                        */
;/*    _txm_module_thread_shell_entry        Start module thread           */
;/*                                                                        */
;/*  RELEASE HISTORY                                                       */
;/*                                                                        */
;/*    DATE              NAME                      DESCRIPTION             */
;/*                                                                        */
;/*  09-30-2020     Scott Larson             Initial Version 6.1           */
;/*                                                                        */
;/**************************************************************************/
;VOID   _txm_module_initialize(VOID)

    EXPORT  _txm_module_initialize
_txm_module_initialize
    PUSH    {r4-r12,lr}                         ; Save dregs and LR

    B       __scatterload                       ; Call ARM func to initialize variables

;
;/* Override __rt_exit function. */
;
    EXPORT  __rt_exit
__rt_exit

    POP     {r4-r12,lr}                         ; Restore dregs and LR
    BX      lr                                  ; Return to caller
;
;
;
    EXPORT __user_setup_stackheap
    ; returns heap start address in  R0
    ; returns heap end address in    R2
    ; does not touch SP, it is already set up before the module runs

__user_setup_stackheap
    LDR     r1, _tx_heap_offset                 ; load heap offset
    ADD     r0, r9, r1                          ; calculate heap base address
    MOV     r2, #TXM_MODULE_HEAP_SIZE           ; load heap size
    ADD     r2, r2, r0                          ; calculate heap end address
    BX      lr

    ALIGN 4
_tx_heap_offset
    DCDO        txm_heap
    AREA ||.arm_vfe_header||, DATA, READONLY, NOALLOC, ALIGN=2

    IMPORT txm_heap [DATA]

;
; Dummy main function
;
    AREA section_main, CODE, READONLY, ALIGN=2
    EXPORT main
main
    BX lr

    END
